living in double storey house and the weather is quite hot
i tot of using central ventilation fan to suck off the heat
i'm open to ideas besides the air cond lah.

something like this dude....
example

do you know any ways or price or quotations ?
since i need a budget for it to work.

I am looking for the attic venting for the roof too, wonder who can supply.

look for turbine ventilator suppliers

this is a great idea.. i suppose any type of exhaust fan will do.. well.. need to get the proper CFM rating lah.. but, where to put? I saw in some places they have those little dome-like thing coming out from the roof..

Every room I install ventilation fan, this will help suck fresh air in when I open windows.

For the purpose of extracting hot air, it is best to place them at the higher lever. Hot air rises

found this blog which is quite informative.. check it out..

http://voyager8.blogspot.com/2008/04/make-...heaper-and.html

not the best idea if outdoor temp is higher than indoor temp

This not work during day time in here. You are sucking hot air into your house.

What you need is preserve the cold air in your house as long as possible. And only suck cold air during late evening or night.

open your windows around the house. Use fan

Use only at night when we want fresh air. And during hazy days is not recommend.

aisay...
coz my 2nd level quite hot during the day time leh
so best to let all the hot air out
but ground floor is quite cool
hence the reason to do this exercise.

well the best is still to put turbine ventilator the spinning thing on the roof...

that will extract the hot air , from between the roof n ceiling thus reducing the "radiant" heat to the room..

you can place the louver where the air cycles through in the bathroom

so in the same time ur reducing moisture in the bathroom and also have a place for the air to move

since most bathroom have, a window directly to the outside...

How effective are those roof top turbines?

How about those aluminium sheets on the roof? Do they help? I notice that my house has them installed.

If you use both, that's the best

Those aluminium sheets are those thin ones, not the more expensive and thicker ones with bubbles etc. Not sure how effective are those.

As for hte turbine, is the difference in temperature noticable? It's it ok when it's rainy, wouldn't want water to get in the roof. Any good vendor to recommend in Penang for this ?

ya lor bro
that's a superb idea
dont you think so ?
now need to look for teh vendor...

If you find the louver vendor please let me know. I want to put a 2' x 6"

what's a louver?????????